added a process to create a coarser level scene
added a process to create a coarse model
added a function to traverse to a level specified in the octree
FAB in iterating over the cells during intializing the model at a level
add camera conversion for an affine camera
included the levele specified
corrected the value of alpha for the parents cell
changed the number of workitems in a workgroup
added a depth variable to the point cloud extraction
modified the wrapper for the update parents process
modified the wrapper for gen_point_cloud
modified simulated annealing for registration
added a temp file to ignore files